Magnetism and Electromagnetism If a loop in a basic dc generator suddenly begins rotating at a faster speed, the induced voltage increases reverses polarity decreases remains unchanged increases reverses polarity decreases remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the current through the coil of an electromagnet reverses, the direction of the magnetic field reverses direction of the magnetic field remains unchanged magnetic field expands magnetic field collapses direction of the magnetic field reverses direction of the magnetic field remains unchanged magnetic field expands magnetic field collapses ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The initial permeability of an iron rod is The permeability at the end of the iron rod The highest permeability of the iron rod The permeability almost in non-magnetised state The lowest permeability of the iron rod The permeability at the end of the iron rod The highest permeability of the iron rod The permeability almost in non-magnetised state The lowest permeability of the iron rod ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When an iron piece is placed in a magnetic field the magnetic lines of force will bend away from their usual paths in order to go away from the piece the magnetic field will not be affected the magnetic lines of force will bend away from their usual paths in order to pass through the piece the iron piece will break the magnetic lines of force will bend away from their usual paths in order to go away from the piece the magnetic field will not be affected the magnetic lines of force will bend away from their usual paths in order to pass through the piece the iron piece will break ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The commonly used material for shielding or screening magnetism is Aluminium Copper Soft iron Brass Aluminium Copper Soft iron Brass ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ? 22 x 10"5 N 22 x 10-6 N 22 x 10"8 N 22 x 10"7 N 22 x 10"5 N 22 x 10-6 N 22 x 10"8 N 22 x 10"7 N ANSWER DOWNLOAD EXAMIANS APP
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